WANTED - extension tubes for Nikonos 35mm

Is there anybody with a set of extension tubes for the Nikonos 35mm or 28mm lens? I'm looking for something useable and not in beat-up condition, perhaps somebody is getting rid of their film camera set-up and going digital...

Is there anybody with a set of extension tubes for the Nikonos 35mm or 28mm lens? I'm looking for something useable and not in beat-up condition, perhaps somebody is getting rid of their film camera set-up and going digital...thanks,